Components

	XL6009	x 1
	LM2596-ADJFW05ARHQ	x 1
	5280 Adafruit Industries LLC	x 1

Description

DIY-Wide Range Adjustable DC-DC Buck-Boost Converter v2

This schematic details a versatile DC-DC power supply, commonly known as a buck-boost converter, engineered to accept a wide input of 3V to 30V and deliver a stable, adjustable output from 1.2V to 30V. Its key feature is the ability to regulate the output voltage regardless of whether the input is higher or lower than the desired output.

The circuit’s flexibility comes from its two-stage topology. The first stage, using an XL6009 boost controller (U1), steps up the input voltage to a consistent intermediate level. This voltage is then fed to the second stage, a robust LM2596S-ADJ (U2) buck converter. This step-down regulator precisely controls the final voltage, which is finely tuned by the user via potentiometer P2, making it ideal for battery-powered devices and applications with fluctuating power sources.

previous v1 is https://www.pcbway.com/project/shareproject/DIY_Wide_Range_Adjustable_DC_DC_Buck_Boost_Converter_e01824c8.html

Code

ALL in here

https://github.com/Shourov-Paul/DC-BUCK-BOOST

Schematic and Layout

DC BUCK BOOST.pdf

Download Gerbers Download BOM(Bill of materials)

Jul 12,2026

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DIY-Wide Range Adjustable DC-DC Buck-Boost Converter v2

DIY-Wide Range Adjustable DC-DC Buck-Boost ConverterDIY-Wide Range Adjustable DC-DC Buck-Boost Converter

Published: Jul 12,2026

Standard PCB

Download Gerber file 1

BOM(Bill of materials)

Centroid file

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